package com.thread.Lock;

import java.util.concurrent.locks.ReentrantLock;

//测试Lock锁
public class TestLock {
    public static void main(String[] args) {
        TestLock2 testLock2 = new TestLock2();

        new Thread(testLock2).start();
        new Thread(testLock2).start();
        new Thread(testLock2).start();
    }
}

class TestLock2 implements Runnable{

    int tickets = 10 ;

    //定义可重入锁
    private final ReentrantLock lock = new ReentrantLock();
    @Override
    public void run() {
        while(true){
            try{
                lock.lock();//加锁
                if (tickets>0){
                    try {
                        Thread.sleep(1000);
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                    System.out.println(tickets--);
                }else {
                    break;
                }
            }finally {
                lock.unlock();//解锁
            }
        }

    }
}

    